/Engine/Source/Runtime/Landscape/Classes/LandscapeComponent.h
void SetWeightmapTexturesUsageInternal ( const [TArray](API\Runtime\Core\Containers\TArray)< [ULandscapeWeightmapUsage](API\Runtime\Landscape\ULandscapeWeightmapUsage) * > & InNewWeightmapTexturesUsage, const [FGuid](API\Runtime\Core\Misc\FGuid) & InEditLayerGuid )